教科書：Crown
教科書：Crown：Communication II：Lesson 9Long Voyage HomesentHayabusa

onamissionto②
Developing an 〔自立航行：autonomousnavigation〕system was another goal.

bringbacksoilsamples

from〔電波信号が３億キロを移動するのに16分を要する：

asteroid〕300 million kilometers away.

minutes to travel 300 million

In 2003, Japanese scientists〔ハヤブサを、イトカワから土壌サンプルを持って帰る任務に、送り出した：

Itokawa〕,｜a〔小さな小惑星：tiny

This was an 〔ほとんど不可能な任務：almostimpossible mission〕.

Ittakesaradio

signal16kilometers〕 between the Earth andItokawa.

〔緊急時には：Inanemergency〕, Hayabusa could not wait for〔命令：commands〕. It had to〔判断する：①
The Hayabusa Project was very 〔野心的：ambitious〕. JAXA set very difficult goals
for the mission: developing ion engines,developing an〔自立航行：autonomousnavigation〕system, collecting soil
samples from Itokawa, and bringing them back.
〔〜なので：Since〕 asteroids like Itokawa〔我々の太陽系の始まりに遡る：date from the
beginning of our solar system〕,｜

such samples will〔〜を解決するのを助ける（原形不定詞）：help solve〕the mysteries of oursystem's〔起源：origin〕. This would be〔前代未聞：unprecedented〕in the history ofspace exploration.

judge〕the situation and decide what to do〔自力で：on its own〕.

The other two goals were even more difficult.
Itokawa is a small〔ピーナッツ型の：peanutshaped〕 asteroid only 535 meters long.
Flying 〔秒速34kmで：at the speed of 34
kilometers per second〕, Hayabusa
would be trying to hit a piece of “dust” in space.
This would be like hitting a one-millimeter target
in Brazil from Japan. One of the scientists〔述べた：observed〕, “If Hayabusa〔〜を達成する：achieves〕these goals, it will have done〔他のどんな宇宙船も今までにしなかったことを：what

no other spacecraft has everdone〕.”

Developing ion engines for space exploration was
one of the most important goals. Most rocket
engines use〔気体：gases〕and〔液体：liquids〕. An ion engine uses〔電場/電解：electric fields〕. 〔その力はとても小さいので一枚の１円硬貨を持ち上げることしかできない：Its

power is so small that it can
only lift a one-yen coin〕. 〔けれども：Yet〕｜〔〜に到達する事：Getting to〕Itokawa wasdifficult, but touching down and collecting the soilsamples was〔不可能に近い：next toimpossible〕. In its〔着地する最初の試み：
first attempt to land〕, Hayabusa
was damaged. A week later, it tried again. This
time it was able to land and collect the samples.

in space,〔重力と空気抵抗がないので（分詞構文）：
there being no gravity and noair resistance〕, even a small amountof energy can be powerful.

Hayabusa〔家に向かった：headed home〕, butalmost〔すぐに：immediately〕fuel began
to〔漏れる：leak〕and its batteries began to〔切れる：fail〕. The team〔なんとか解決した：
managed to solve〕these problems, but〔数日後に事態はさらにより悪化した：days later
thingsgotmuchworse〕. All

communication with Hayabusa was cut off.

教科書：Crown：II：READ 27③〔明けても暮れても：Day in and day out〕,

the team sent a message: “Hayabusa, we arewaiting for your answer. Come in, please!” But nospacecraft in history had ever been able to start
communication again after such a long〔停電：blackout〕.

｜Hayabusa was lost in space for 43 days. Finally it
answered, but the〔短時間の絶好の機会：windowof opportunity〕 for re-entry had
already passed. Hayabusa had to remain in space
for〔さらに３年：another three years〕. Later,
there was a new problem: all four engines
stopped. It was almost impossible for Hayabusa toreturn to the Earth. However, by〔なんとか：somehow〕fixing the engines, the team〔ハヤブサを再開することに成功した：succeeded in④
The capsule with its soil samples landed safely in
the Australian desert on June 13, 2010.
Kawaguchi says, “Many people said the Hayabusa
Project was too〔野心的：ambitious〕andthat there were too many risks. I knew it wastrue and I have to〔認める：admit〕that thesuccess of the project was the result of a lot of〔幸運：luck〕. But we have always been ready to
set high goals and〔リスクをとる：takerisks〕. If you want to〔はるか先を見通す：seea long way〕, you have to build a high tower.
“If we can get the necessary support, we will soon
be working on a new spacecraft which will go〔20から30倍より遠くに：20to30timesfarther〕than Hayabusa.”

reactivating Hayabusa〕.
ひど｜In June 2010, Hayabusa,〔酷く破損させられて：badly damaged〕, was finally〔接近している：approaching〕 the Earth. Hayabusa
released the capsule successfully, and would soonburn up like a shooting star. It was not made to〔〜耐える：withstand〕the heat of re-entry—about 3,000 degrees Celsius. Kawaguchi
Junichiro, manager of the Hayabusa Project, sent
one last〔命令：command〕: “Take a photo ofthe Earth.” All the project members wanted to see〔地球がどのように見えるか：whattheEarthlooked like〕 to Hayabusa〔それが燃え尽きる直前に：just before it burned up〕.

Hayabusa tried to take the photo several times
but failed. Finally, 〔正に最後の瞬間に：at thevery last moment〕, it took this photo—
Hayabusa's final〔さよなら：farewell〕.

｜In the 15th and 16th centuries, people like
Magellanマゼラン〔航海に出発した：set out onvoyages〕 to the East 〔〜を探して：insearch of〕gold and spice. Now
Kawaguchi believes we〔〜に入ろうとしている：
are about to enter〕 a “New Age ofExploration” into space〔〜を探して：insearch of〕 new 〔知識：knowledge〕
and resources.
Kawaguchi〔締めくくる：concludes〕: “We'dlike to be leaders in this new age. Setting highgoals means〔大きな困難に直面すること：facinggreat difficulties〕. We must be strong
and build good teamwork. We must not〔落胆させら れ る / 思 い 止 ま ら せ ら れ る ： g e t
discouraged〕 by trouble and failure.

Looking at Hayabusa's photo of the Earth, I seemto hear its voice: ‘Never give up! Forward into thefuturewithhope
and〔自信：confidence〕!’”